{
  "resourceType": "Observation",
  "id": "observation-edb-consistent-lmp-us-example",
  "meta": {
    "versionId": "1",
    "lastUpdated": "2019-12-27T16:13:03Z",
    "profile": [
      "http://hl7.org.au/fhir/ch/v1/StructureDefinition/ncdhc-observation-edb-consistent-lmp-us"
    ]
  },
  "status": "final",
  "code": {
    "coding": [
      {
        "system": "http://snomed.info/sct",
        "code": "1377101000168100"
      }
    ],
    "text": "Estimated date of delivery consistent between last menstrual period and antenatal ultrasound scan"
  },
  "subject": {
    "reference": "Patient/ncdhc-patient-expectant-mother-example",
    "display": "Eve Bill"
  },
  "effectiveDateTime": "2019-12-24",
  "performer": [
    {
      "reference": "Practitioner/examiner-practitioner",
      "display": "Examiner"
    },
    {
      "reference": "Organization/examiner-organization",
      "display": "Organisation"
    }
  ],
  "valueCodeableConcept": {
      "coding": [
      {
        "system": "http://snomed.info/sct",
        "code": "373066001"
      }
    ]
  },
  "related": [
    {
      "type": "derived-from",
      "target":     
      {
        "reference": "Observation/observation-estimated-date-birth-last-period-example",
        "display": "Estimated date of birth from last known menstrual period"
      }
    },
    {
      "type": "derived-from",
      "target":     
      {
        "reference": "Observation/ncdhc-observation-ultrasound-scan-obstetric-example",
        "display": "Estimated date of birth from antenatal ultrasound scan"
      }
    }
  ]  
}